Hello Digga1111, I am also in Aus and have done a F350 2015 14inch disc brake upgrade on my 1958 Chevy 2 tonne front axle , used the standard chev spindles and just made up plates to hold calipers, has worked well, needed to space out the bearings 10mm to ensure same wheelbase at the front for engineering/roadworthy purposes . Always keen to hear from another big bolt fan in Aus so drop me a line with your contact details if interested
